For her daughter, see Susan Alice Buffett
Susan Thompson Buffett (June 15, 1932 – July 29, 2004) was an American activist for the causes of civil rights, abortion rights and birth control, and the first wife of investor Warren Buffett.
She was a director of Berkshire Hathaway, owning 2.2 percent (worth US$3 billion in 2004) of the company at the time of her death, and was the 153rd richest person in the world.
She was president of the Buffett Foundation, which has contributed millions of dollars to educational groups, medical research, family planning groups and other charities.